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In radiology, the Terry-Thomas sign is a scapholunate ligament dissociation on an anteroposterior view of the wrist. [1] [2] Most commonly a result of a fall on the outstretched hand , the scapholunate ligament ruptures resulting in separation of the lunate and scaphoid bones. This burst causes the scaphoid bone to dorsally rotate. [3]
X-ray images indicate scapholunate ligament instability when the scapholunate distance is more than 3 mm, which is called scapholunate dissociation. [7] A static scapholunate instability is generally readily visible, but a dynamic scapholunate instability can only be seen radiographically in certain wrist positions or under certain loading conditions, such as when clenching the wrist, or ...
Dissociation in chemistry is a general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into other things such as atoms, ...
The Brunelli Procedure [1] is a surgical procedure that can be used to correct instability in the wrist. [2] Instability in the wrist can be caused by a torn Scapholunate ligament.
Dissociation, in the wide sense of the word, is an act of disuniting or separating a complex object into parts. Dissociation may also refer to: Dissociation (chemistry) , general process in which molecules or ionic compounds (complexes, or salts) split into smaller particles, usually in a reversible manner
What is dissociation? You’re in the middle of a meeting and your boss asks for your opinion on the topic at hand. There’s just one problem: You have absolutely no idea what topic that is.
To perform the test, the examiner grasps the wrist with their thumb over the scaphoid tubercle (volar aspect of the palm) in order to prevent the scaphoid from moving into its more vertically oriented position in ulnar deviation.
If working over a ring where SL is generated by transvections (such as a field or Euclidean domain), one can give a presentation of SL using transvections with some relations. Transvections satisfy the Steinberg relations , but these are not sufficient: the resulting group is the Steinberg group , which is not the special linear group, but ...